Q420HD steel belongs to the nuclear power steel category among carbon steel plates. Nuclear power steel should have good structural stability, weldability, cold and hot workability and nuclear fatigue strength at working temperature. It should have good resistance to radiation embrittlement sensitivity under reactor irradiation conditions, but this grade of The steel plate generally also has certain requirements for its Z-direction performance.
Q420HD steel mechanical properties
Shapes |
Delivery state |
Mechanical properties |
|
|
Plate (t≤40mm) |
Hot rolled, normalized, tempered |
ReH(MPa) |
≥420 |
|
Rm(MPa) |
585～705 |
||
|
A50(%) |
≥20 |
||
|
Imapct temperature(℃) |
-30 |
||
|
Akv(J) |
≥47 |
||
|
Plates(＞40 ~ 100mm) |
Hot rolled, normalized, tempered |
ReH(MPa) |
≥420 |
|
Rm(MPa) |
585～705 |
||
|
A50(%) |
≥20 |
||
|
Imapct temperature(℃) |
-30 |
||
|
Akv(J) |
≥47 |
||
Q420HD steel delivery status: Q420HD nuclear power steel plates are delivered in hot rolled, normalized or tempered conditions.
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